MM,
I verified that all of the content of BIRD 175.3 were made correctly in
this version of IBIS 6.1. Alas, only God is perfect. On page 189/190 (187
when all changes are accepted), the new paragraphs have bullets, but the
paragraph they replace do not, and one of the line "For PAM4 models ." was
not changed correctly. Section hould be:
For NRZ models, it is assumed that the electrical interface to either the
driver or the receiver is differential. Therefore, the sample values are
assumed to be differential voltages centered nominally around zero volts.
The algorithmic model's logic threshold may be non-zero, for example to
model the differential offset of a receiver; however that offset will
usually be small compared to the input or output differential voltage.
The output waveform is expected to be the waveform at the decision point
of the receiver (that is, the point in the receiver where the choice is
made as to whether the data bit is a "1" or a "0"). It is understood that
for some receiver architectures, there is no one circuit node which is the
decision point for the receiver. In such a case, the output waveform is
expected to be the equivalent waveform that would exist at such a node
were it to exist.
For PAM4 models, it is assumed that the electrical interface to either the
driver or the receiver is differential and will have four logic levels.
The output waveform is expected to be the waveform at the decision point
of the receiver (that is, the point in the receiver where the choice is
made as to whether the symbol is a "0", "1", "2" or a "3"). It is
understood that for some receiver architectures, there is no one circuit
node which is the decision point for the receiver. In such a case, the
output waveform is expected to be the equivalent waveform that would exist
at such a node were it to exist.
Walter
From: ibis-editorial-bounce@xxxxxxxxxxxxx
[mailto:ibis-editorial-bounce@xxxxxxxxxxxxx] On Behalf Of Mirmak, Michael
Sent: Thursday, June 18, 2015 8:07 PM
To: ibis-editorial@xxxxxxxxxxxxx
Subject: [ibis-editorial] Draft 3 of Ver. 6.1
Please find enclosed Draft 3 of IBIS Ver. 6.1. This incorporates BIRDs
175.3, 176, and 177, plus some other minor fixes. It will be discussed at
tomorrow's Editorial Task Group meeting.
- MM
